For that size space bro you would create hurricane like winds. Something like 230cfm would be fine with the speed controller. I have a 400cfm inline pulling through 2-600w air cooled hoods, which pulls through my carbon filter. It's a beaut!! The fan controller was key. Because my basement is so cold, without the controller the fan was full power all day and my tent was the same temp as my basement. Low to mid 50s. Now with the controller I have control( cliche huh ). And did I mention it will save you a couple bucks on electric bill. Always a bonus!